P
AGE
18
FIGURE 2-12
Alternate Remote Digital Communications RS-485 Terminals G & H (Optional)
If the communications network continues on to other units, connect the shields together, but
not to the instrument. A terminating resistor should be installed at the terminals of the last
instrument in the loop. The shield should be grounded at the computer or the convertor box, if
used. See the Protocol Manual (Form 2878) for more details on the use of the digital
communications option.
Terminals G & H are used
for communications when
the model number is
6XXY04X or 6XXY06X where
X= any valid number and
Y=3, 4, or 5.
2.6.3 OUTPUT CONNECTIONS
Output connections include SPST relays, SSR drivers, and 4 to 20mADC. Relay outputs
may be assigned control, alarm or event functions. Assignment of output function is accom-
plished via the front keypad and is described in Section 4 (page 38) of this manual.
FIGURE 2-13
Relay Output
Connections are made to relay A as illustrated below. Connect relay(s) B & C (if present) in
the same manner. Relay contacts are rated at 5 amp resistve at 130 VAC.
B
A
GROUND
D
C
INPUT
POWER
F
E
H
G
Rear View
Output 3 Must Be 0
From Host
Computer
To Other
Instruments
DIGITAL COMMUNICATIONS
CONNECTIONS - TERMINALS G & H
B
A
GROUND
RELAY A
D
C
INPUT
POWER
LOAD
L2
L1
Rear View
B
A
GROUND
D
C
INPUT
POWER
F
E
H
G
L2
L1
LOAD
Rear View
RELAY B